Kenwood TS-2000
Installed HUPRF PAT85 tapped to CN6, the 1st IF just upstream of the roofing filters.
Hamlib config
The TS-2000 has a strange TX command - it's mostly useless as it only will key the radio with audio from the mic on the front. You want this cmd usually to key the radio with audio from the rear ACC jack, with audio from a signalink or soundcard for running digital modes. The following parameter will disable the PTT commands over serial for hamlib:
rigctld -m 2014 -r /dev/ttyUSB0 -s 57600 --set-conf=ptt_type=None